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Organic-inorganic complex, and composition for forming same

a technology of organic complexes and complexes, applied in the direction of anti-reflective coatings, coatings, etc., can solve the problems of surface glitter, visibility decrease, haze value decrease, etc., and achieve excellent interlayer adhesiveness, good surface slip properties, and high polarity

Inactive Publication Date: 2015-12-22
NIPPON SODA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]It is an object of the present invention to provide anti-glare properties to a polysiloxane-based organic-inorganic complex in which the surface has higher hardness than the inside, to provide an organic-inorganic complex that has both high surface hardness and a low haze value, and can further prevent glare.Means to Solve the Object
[0021]The present inventors have addressed the above object and studied diligently, and, as a result, found that an excellent organic-inorganic complex in which the surface has very high hardness and which simultaneously has excellent anti-glare properties, can prevent glare, and has a low haze value can be produced by further containing a mixture of metal oxide fine particles in which silica is mixed with at least one selected from zirconia, alumina, and titania, as metal compound particles, in an organic-inorganic complex in which a polysiloxane-based organic-inorganic complex consisting of a particular silicate and an electromagnetic ray-curable compound are blended, leading to the completion of the present invention.

Problems solved by technology

A problem of conventional anti-glare films is that the unevenness shape of the surface is made large, and therefore, the haze value decreases.
A further problem is that the film surface glitters, and the visibility decreases.
However, these hard coating films using acrylate-based resins and the like have poorer wear resistance than inorganic films, and therefore, a metal oxide sol having high hardness is added for improvement.
But, in this method, the surfaces of the metal oxide particles are covered with a large amount of the resin, and a sufficient effect cannot always be expected.
Particularly, in the case of anti-glare films that contain metal oxide particles having a large particle diameter to form an unevenness on the surfaces of the films, a problem is that unless the surfaces of the metal oxide particles are covered with the resin, the metal oxide particles having a large particle diameter fall off in a wear test.
However, the light reflection properties of the above organic-inorganic complex have not been studied.
The performance as an anti-glare film has been sufficient, but a problem has been that the performance may not be exhibited depending on the substrate on which the film is formed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

1. Synthesis of Silanol Condensation Catalyst (Photosensitive Compound)

[0124]212 g of titanium diisopropoxybisacetylacetonate (the amount of solids in terms of titanium oxide: 16.5% by weight) was dissolved in 410 g of a mixed solvent of ethanol / a lower alcohol / water=86:13.8:0.2, and then, 79 g (10 times moles / the moles of titanium oxide) of ion-exchange water was added with stirring. This solution was stirred for 2 hours, while being heated to 40° C., for hydrolysis. Next, the solution was filtered to obtain a yellow transparent nanodispersion solution of titanium oxide having a concentration of 5% by weight in terms of titanium oxide [A-1]. The titanium oxide had an average particle diameter of 4.1 nm, and was monodisperse.

2. Preparation of Organic Silicon Compound

[0125]Liquids [B-1] to [B-2] obtained by mixing vinyltrimethoxysilane (VTMS) (the SP value of CH2═CHSiO1.5: 7.00) and 3-methacryloxypropyltrimethoxysilane (MPTMS) (the SP value of (CH2=CH(CH3)C(═O)O—(CH2)3SiO1.5: 9.48) a...

example 2

[0131]Methyltrimethoxysilane (the SP value of CH3SiO1.5: 5.80) and n-propyltriethoxysilane (the SP value of CH3(CH2)2SiO1.5: 7.28) were used instead of VTMS in [C-1] in the preparation of the [E-1] of Example 1, and others were prepared as in Example 1 to prepare organic-inorganic complex-forming solutions [E-3] to [E-4].

example 3

Organic-Inorganic Complex Formation

[0136]The organic-inorganic complex-forming solutions [E-1] to [E-4] were coated on 188 μm thick PET films (anti-interference fringe PET COSMOSHINE A4300-#100 manufactured by Toyobo Co., Ltd.) by a bar coater, and heated at 80° C. by a warm air circulation type dryer for 3 minutes. Then, the films were irradiated with ultraviolet rays in an accumulated amount of irradiation of 362 mJ / cm2 (254 nm) by a condensing type high pressure mercury lamp (UV light comprising light having wavelengths of 365 nm, 313 nm, and 254 nm as the main component, manufactured by EYE GRAPHICS CO., LTD., one lamp type, 120 W / cm, lamp height: 9.8 cm, conveyor speed: 6 m / min) to obtain thin films [F-1] to [F-4].

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Abstract

The organic-inorganic complex of the present invention is made using an organic-inorganic complex-forming composition containing the following components a) to c): a) at least one organic silicon compound represented by the formula (I) RnSiX4-n and in which a molar ratio of an organic silicon compound in which a solubility parameter of R (SP1) obtained by a Fedors' estimation method is smaller than a solubility parameter of an electromagnetic ray-curable compound (SP2) obtained by the Fedors' estimation method and a difference between the SP1 and the SP2 is 2.0 or more (Si1) to an organic silicon compound in which SP1 is smaller than SP2 and a difference between the SP1 and the SP2 is less than 2.0 or an organic silicon compound in which SP1 is larger than SP2 (Si2) (Si1:Si2) is within the range of 8:2 to 10:0, and / or a condensate of the organic silicon compound; b) an electromagnetic ray-curable compound; and c) metal compound particles.

Description

TECHNICAL FIELD[0001]The present invention relates to an organic-inorganic complex containing metal compound particles, and a composition for forming the same, and particularly to an organic-inorganic complex in which the carbon content on the surface side is lower than the carbon content inside and the surface is inorganic, the organic-inorganic complex having an unevenness on the surface by further containing metal compound particles, and a composition for forming the same. The metal compound particle-containing organic-inorganic complex of the present invention is preferably used as anti-glare films and the like provided on the surfaces of high definition image displays, such as CRTs and liquid crystal panels, used for the image display of computers, word processors, televisions, cellular phones, and the like.[0002]This application is a national stage application of International Application No. PCT / JP2012 / 005025, filed Aug. 8, 2012, which claims priority to Japanese Patent Appli...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C09D143/04C08F2/44C09D5/00C09D7/12C09D133/14
CPCC09D143/04C08F2/44C09D5/006C09D7/1266C09D133/14C09D7/67
Inventor YAMATE, TAIKI
Owner NIPPON SODA CO LTD